P4KE51CA
Public Made by Adomby adom
Littelfuse ESD And Surge Protection (TVS/ESD), DO-204AL(DO-41). Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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README
markdownP4KE51CA
Littelfuse · ESD And Surge Protection (TVS/ESD) · DO-204AL(DO-41)
P4KE51CA from Littelfuse, in a DO-204AL(DO-41). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | K | passive | Cathode: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| Package | DO-204AL(DO-41) |
| Category | Circuit Protection |
| Pins | 2 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Breakdown Voltage | VBR | 48.5 | 53.6 | V | @ IT = 1 mA | 2 | |
| Maximum Clamping Voltage | VC | 70.1 | V | @ Ipp = 5.80 A | 2 | ||
| Maximum Reverse Leakage Current | IR | 1 | µA | @ VR = 43.6 V | 2 | ||
| Maximum Peak Pulse Current | Ipp | 5.8 | A | 2 | |||
| Reverse Stand-off Voltage | VR | 43.6 | V | 2 | |||
| Peak Pulse Power Dissipation (Single Die) | PPPM | 400 | W | 10/1000 µs waveform (Note 1), single die parts | 1 | ||
| Steady State Power Dissipation | PD | 1.5 | W | on infinite heat sink at TL = 75 ºC | 1 | ||
| Operating Junction and Storage Temperature Range | TJ, TSTG | -55 | 175 | °C | 1 | ||
| Temperature Coefficient of VBR | αT | 0.1 | % | VBR(TJ) = VBR@25°C x (1+αT x (TJ - 25)) | 1 | ||
| Typical Thermal Resistance Junction to Lead | RθJL | 60 | °C/W | Typical | 1 | ||
| Typical Thermal Resistance Junction to Ambient | RθJA | 100 | °C/W | Typical | 1 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | tin | level interconnect is Pbfree and the terminal finish material is tin(Sn) (IPC/ | 1 |
CAD (KiCad official)
- Symbol:
P4KE51CA - Footprint:
Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal - 3D model: DO-204AL(DO-41) (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (6 pp, sha256
cab61a39ecf2d397, retrieved 2026-10-16, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins, primarycathode-band convention(convention), consensusoff(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).